[rabbitmq-discuss] Monitoring rabbitmq

Tue Jan 26 20:42:39 GMT 2010

Hi folks,

I'm trying to find a good way to monitor rabbit for inclusion in an HA
cluster (pacemaker/corosync).

Does anyone have a good resource agent already created for such a purpose?

Here is what I've got so far:

#!/bin/bash

#######################################################################
# Initialization:
. /usr/lib/ocf/resource.d/heartbeat/.ocf-shellfuncs
#######################################################################

meta_data() {
        cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="rabbitmq" version="0.9">
<version>1.0</version>

<longdesc lang="en">
Rabbitmq agent
</longdesc>
<shortdesc lang="en">Rabbitmq resource agent</shortdesc>
<actions>
<action name="start"        timeout="90" />
<action name="stop"         timeout="100" />
<action name="monitor"      timeout="20" interval="10" depth="0"
start-delay="0" />
<action name="meta-data"    timeout="5"
/>
<action name="validate-all"   timeout="30"
/>
</actions>

</resource-agent>

END

}

usage() {
        cat <<END
usage: $0 {start|stop|monitor|validate-all|meta-data}

END
}

start() {
        /usr/sbin/rabbitmq-multi start_all 1 2>&1 > /dev/null
        exit $?
}

stop() {
  /usr/sbin/rabbitmq-multi stop_all 2>&1 > /dev/null
  ret=$?

  if [ $ret -eq 2 ]; then
    return $OCF_SUCCESS
  fi

  if [ $ret -ne 0 ]; then
    sleep 5
    pidof beam.smp
    ret=$?
    if [ $ret -eq 1 ]; then
      /usr/bin/killall -TERM epmd beam.smp
      sleep 30
      /usr/bin/killall -KILL epmd beam.smp
    fi
  fi
  return $OCF_SUCCESS
}

monitor() {
  status=`/usr/sbin/rabbitmq-multi status 2>&1`
  res=$?
  if [ $res -eq 2 ]; then
    return $OCF_NOT_RUNNING
  fi

  if [[ $status =~ 'not_running' ]]; then
    return $OCF_NOT_RUNNING
  else
    if [ $res -eq 0 ]; then
      return $OCF_SUCCESS
    else
      return $OCF_ERR_GENERIC
    fi
  fi
}

validate() {
    return $OCF_SUCCESS
}

case $__OCF_ACTION in
meta-data)      meta_data
                exit $OCF_SUCCESS
                ;;
start)          start;;
stop)           stop;;
monitor)        monitor;;
validate-all)   validate;;
usage|help)     usage
                exit $OCF_SUCCESS
                ;;
*)              usage
                exit $OCF_ERR_UNIMPLEMENTED
                ;;
esac
rc=$?
ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc"
exit $rc

---------

It feels like a bit of a kludge though. If anyone has any suggestions on how
to thoroughly monitor rabbit, please let me know.

Regards,

-- 
Mark Steele
Director of development
Bering Media Inc.
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